:root {
  --bg: #121212;
  --panel: #111827;
  --panel-2: #1f2937;
  --text: #f8fafc;
  --muted: #cbd5e1;
  --accent: #22d3ee;
  --danger: #fb7185;
}

html {
  box-sizing: border-box;
  font-size: 62.5%;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  color: var(--text);
  background-color: var(--bg);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  font-size: 1.5em;
}

h1 {
  text-align: center;
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--text);
}

h2 {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: normal;
  margin: 0 0 0.8rem;
  line-height: 1.2;
}

label {
  display: block;
  margin: 0 0 0.8rem;
  line-height: 1.2;
  color: var(--muted);
  font-size: 2rem;
  font-weight: 600;
}

#contenido {
  padding: 4rem 0;
}

.container {
  max-width: 1100px;
}

.borrar-tweet {
position: absolute;
top: 1rem;
right: 1rem;
color: var(--danger);
text-decoration: none;
font-weight: bold;
cursor: pointer;
}

.borrar-tweet:hover {
color: var(--text);
}

#lista-tweets {
  margin: 0;
  padding: 0;
}

#lista-tweets li {
  position: relative;
  margin-bottom: 1rem;
  padding: 1.2rem 4rem 1.2rem 1.2rem;
  list-style: none;
  background-color: var(--panel-2);
  border-radius: 1rem;
  color: var(--text);
  word-break: break-word;
  overflow-wrap: anywhere;
  white-space: normal;
  line-height: 1.6;
}

.error {
  background-color: #dc2626;
  text-align: center;
  padding: 1rem 1.2rem;
  text-transform: uppercase;
  border-radius: 1rem;
  font-weight: 700;
  max-width: 40rem;
  margin: 2rem auto 0;
  color: var(--text);
}

.row {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 2rem;  
}

.row .columns {
  width: auto;
  float: none;
  margin-left: 0;
  padding: 2rem;
  border-radius: 1.5rem;
  background-color: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 768px) {
  .row {
    grid-template-columns: 1fr;
  }
}